DE284362C - - Google Patents
Info
- Publication number
- DE284362C DE284362C DENDAT284362D DE284362DA DE284362C DE 284362 C DE284362 C DE 284362C DE NDAT284362 D DENDAT284362 D DE NDAT284362D DE 284362D A DE284362D A DE 284362DA DE 284362 C DE284362 C DE 284362C
- Authority
- DE
- Germany
- Prior art keywords
- funnel
- metal plate
- visible
- speaking
- innovation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 230000002265 prevention Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Telephone Set Structure (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE284362C true DE284362C (https=) |
Family
ID=539846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT284362D Active DE284362C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE284362C (https=) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5351979A (en) * | 1991-12-05 | 1994-10-04 | Langenberg B.V. | Two-wheeled vehicle |
-
0
- DE DENDAT284362D patent/DE284362C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5351979A (en) * | 1991-12-05 | 1994-10-04 | Langenberg B.V. | Two-wheeled vehicle |
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